Java.lang.IndexOutOfBoundException error, Universal Mapper plug-in String index out of range:0 error

Information:(1) Mybatis query result type character Exception

80353249

Array out of bounds, there are only a few possible: 1: You do not get the data, you use an array of an item, such as the first item

// Example: New Arraylist<string>(); List.get (1); // list is empty, the first item is empty

2: The data you get may be n, but the n+1 is used.

Universal Mapper Plug-in String index out of range:0 error

Private Character type; // here is the wrong place, you cannot use character as the field type of the database table map, because MyBatis is not judged on the length of the character property when it is converted to the character type. When the value is obtained, the Charat (0) is used directly, so the exception is reported as long as the result of the character type field is an empty string. 

Java.lang.IndexOutOfBoundException error, Universal Mapper plug-in String index out of range:0 error